Corn is deteriorating

This week with lack of rain the corn is looking sadder every day. I drove past what was the best field around yesterday and even it is looking bad. Planted in early May, then 7-8" of rain and now dry=shallow roots. There won't be any corn calf high by July 4th here. Some maybe ankle high that is just now emerging. There's a 160 by me that maybe has a 60-70% stand at best.